if they buy more green energy, it could drive up the cost of electricity. energy contributes. only 1% of the power across the country. nuclear power requires a significant amount of investment, and it is certainly drive up costs. so it remains to be seen if government shares will be able to operate the feed-in tariff in a way that will keep investor interest high and keep energy prices low. >>> a decision to designate the japanese eel an endangered species threatens to take a bite out of japan's eating habits. eel is a popular dish, especially in summer, but there are warnings the fish is in sharp decline. number of the japanese eels in the wild is estimated to dropped by at least 50% over the past ten years. experts blame overfishing and water pollution. >>> bitter cold temperatures are being felt across the northern u.s. meteorologist robert speta with the forecast. how long will this last? >> well, gene, at least into sunday into monday. temperatures across much of the northern u.s. will get back to normal. for now, we're still seeing cold air come across the dakotas and mi